Fulltext – Functional Properties of Bitter Yam (Dioscorea dumetorum) as Influenced by Soaking Prior to Oven-drying. The plant is often purposely grown at spare points on the land as an insurance against famine years, and is also encouraged in hedgerows around a farm and. Notes. BRIEF DESCRIPTION A climbing vine with robust, spiny stems reaching up to m in length. The leaves are trifoliate with ovate leaflets, cm long.
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Aerial tubers or bulbils are usually plucked by hand from the vine as required. American Journal of Food Technology Volume 9 2: Tropical yams and their potential, Part 6.
Potentials of Trifoliate Yam (Dioscorea dumetorum) in Noodles Production | OMICS International
Color is a key quality trait [ 39 ] because of the visual impact at the point of sale. Tropical Agriculture, Trinidad, 54, Los Banos, Laguna, Philippines: Fiji Agricultural Journal, 15, These rots may also affect the growing plant when the setts consist of cut pieces of tuber, but are controlled by simple measures such as the painting of the cut surfaces with limewash or Bordeaux mixture, or coating with wood ash.
Currently, it seems that it should have a future in the home plot or gardens rather than commercial ddumetorum. Marcel Dekker, pp. Virus-like particles and cytoplasmic inclusions associated with diseased Dioscorea spp.
Bitter yam (Dioscorea dumetorum)
Subsidiary uses In Japan about 50 per cent of the Chinese yams are used as a raw material in the preparation of various food products, such as pastry, beanjam bun, fish paste and yam flour. On a dry weight basis the tubers contained 0. Effect of processing time on Rheological and functional properties of achi dumetorym as influenced by processing time.
If the yams are not staked, complete ground cover is attained months from sprouting and weeds are virtually eliminated. The best planting material is the small whole tuber and species such as D. The leaves are petiolate, often cordate, with strongly marked reticulate veining unusual for a monocotyledonsometimes lobed, occasionally palmately compound.
It is cultivated throughout the tropical world. Trifoliate yam ; Noodles production; Sensory evaluation; Chemical composition. Production and trade The major part of the total African production of yams 19 million t is of the D.
Yield High yields are common when the yams are planted in pure stands: Publisher Weinheim Year ISBN – Description An excellent and very comprehensive guide but it only gives very short descriptions of the uses without any details of how to utilize the plants. The leaves are extremely varied, from deeply cordate to almost orbicular, cm long, opposite or alternate. The bulk density value of the sample soaked for 6 h did not differ from that of the control but increased in the sample soaked for 12 h and remained constant thereafter Fig.
Unlike most other yam species grown in Japan, the tubers of D. Farmer, Kingston, Jamaica, 75, The wild forms are regarded as famine food, and the tubers are cioscorea by slicing and soaking and boiling, frequently with the addition of salt; the slices may be subsequently dried.
The application of advanced technology to the improvement of yam storage.
Phytopathology, 60, Y W 0 noodle has the lowest ash content of 1. It has also been reported to be nutritionally superior to the commonly consumed yams with high protein and minerals [ 4 ].
Anthribidae and Decadarchis minuscula Walsingham Lepidoptera: This may explain its hard and waxy texture as revealed from sensory evaluation. Council for Scientific and Industrial Research, pp. Indian Forester, 79, The use of pre-emergence herbicides has been suggested: Yam culture in Japan. Water uptake and cooking weight also increases as the level of TFY in the noodle increases. Planting procedure Material-usually small whole tubers are used, but these are more likely to be affected by disease than small cut pieces of whole tubers, which have been treated with benomyl.
Increase in the swelling index of flours with increasing time was attributed to the increasing heat Ikegwu and Ekwu,hence, the converse may explain the present observation.
Association of virus-like particles with internal brown spot of yam Dioscorea alata.
Potentials of Trifoliate Yam (Dioscorea dumetorum) in Noodles Production
The tubers do not store well, a high proportion becoming hard and inedible within dumetoorum weeks after lifting. Their weight is usually kg though special cultivation can produce giant tubers of 60 kg or more.
Chemistry and Industry, 4 ,